Christos Nikolaou Constantine Stephanidis Research and Advanced Technology for Digital Libraries, Second European Conference, ECDL '98, Heraklion, Crete, Greece, September 21-23, 1998, Proceedings ECDL Lecture Notes in Computer Science 1513 Springer 1998 3-540-65101-2 db/conf/ercimdl/ercimdl98.html